1. | ELEMENTS | COMPOUNDS |
hydrogen | nitrogen dioxide | |
lead | sodium chloride | |
iron | carbon dioxide | |
magnesium | water |
3. | |
a) | aluminium & sulfur |
b) | magnesium, nitrogen and oxygen |
c) | hydrogen, chlorine |
d) | lithium, sulfur & oxygen |
e) | calcium, hydrogen & oxygen |
f) | silicon & oxygen |